com.anwrt.ooserver.daemon
Class Logger

java.lang.Object
  com.anwrt.ooserver.daemon.Logger

Direct Known Subclasses:

Log4JLogger, LoggerBasicImpl

public abstract class Logger
extends Object

Static class.
The logger is used by calling Logger's static methods such as info, debug, etc...

WARNING You must first instantiate a Logger,
Logger.newInstance(new LoggerBasicImpl()); for example.
Other loggers can be created using LoggerBasicImpl as an example.

Author:

Jounayd Id Salah

Field Summary

static int	DEBUG
static int	DETAILED_DEBUG
static int	ERROR
static int	INFO
protected static int	level
static String[]	levelStrings
static int	NB_LEVELS
static int	NONE
static int	WARNING

Constructor Summary

Logger()

Method Summary

static void	debug(Exception ex)
static void	debug(String msg)
static void	debug(String msg, Exception ex)
protected abstract void	debugImpl(Exception ex)
protected abstract void	debugImpl(String msg)
protected abstract void	debugImpl(String msg, Exception ex)
static void	detailedDebug(Exception ex)
protected abstract void	detailedDebugImpl(Exception ex)
static void	error(String msg)
protected abstract void	errorImpl(String msg)
static void	fatalError(String msg)
static void	fatalError(String msg, Exception ex)
protected abstract void	fatalErrorImpl(String msg)
protected abstract void	fatalErrorImpl(String msg, Exception ex)
static Logger	getInstance() Returns the current Logger instance.
static int	getLevel() Returns log level
static void	info(String msg)
protected abstract void	infoImpl(String msg)
static String	levelInformation(String prefixTabs) Returns informations about logging levels
String	levelToString() Converts the current level to String
static void	newInstance(Logger instance) Used to specify which instance will be used by the static methods of the Logger.
static void	setLevel(int lvl) Used to set the log level.
static void	setLevel(String lvlStr) Used to set the log level.
String	toString() displays logger's level
static void	warning(String msg)
protected abstract void	warningImpl(String msg)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

NONE

public static final int NONE

See Also:

Constant Field Values

ERROR

public static final int ERROR

See Also:

Constant Field Values

INFO

public static final int INFO

See Also:

Constant Field Values

WARNING

public static final int WARNING

See Also:

Constant Field Values

DEBUG

public static final int DEBUG

See Also:

Constant Field Values

DETAILED_DEBUG

public static final int DETAILED_DEBUG

See Also:

Constant Field Values

NB_LEVELS

public static final int NB_LEVELS

See Also:

Constant Field Values

levelStrings

public static final String[] levelStrings

level

protected static int level

Constructor Detail

Logger

public Logger()

Method Detail

newInstance

public static void newInstance(Logger instance)

Used to specify which instance will be used by the static methods of the Logger.

Parameters:

instance - a child of the abstract class Logger (ex : LoggerBasicImpl)

getInstance

public static Logger getInstance()

Returns the current Logger instance.

Returns:

current instance

setLevel

public static void setLevel(int lvl)
                     throws IncorrectLoggerLevelException

Used to set the log level. An logger instance is not needed, all this is static.

Parameters:

lvl - level such as INFO, WARNING, DEBUG, ...

Throws:

IncorrectLoggerLevelException - level passed as an argument is not valid

setLevel

public static void setLevel(String lvlStr)
                     throws IncorrectLoggerLevelException

Used to set the log level. An logger instance is not needed, all this is static.

Parameters:

lvlStr - level such as INFO, WARNING, DEBUG, ...

Throws:

IncorrectLoggerLevelException - level passed as an argument is not valid

levelToString

public String levelToString()

Converts the current level to String

Returns:

level as a string

getLevel

public static int getLevel()

Returns log level

Returns:

log level

infoImpl

protected abstract void infoImpl(String msg)

info

public static void info(String msg)

warningImpl

protected abstract void warningImpl(String msg)

warning

public static void warning(String msg)

debugImpl

protected abstract void debugImpl(String msg)

debug

public static void debug(String msg)

debugImpl

protected abstract void debugImpl(String msg,
                                  Exception ex)

debug

public static void debug(String msg,
                         Exception ex)

debugImpl

protected abstract void debugImpl(Exception ex)

debug

public static void debug(Exception ex)

detailedDebugImpl

protected abstract void detailedDebugImpl(Exception ex)

detailedDebug

public static void detailedDebug(Exception ex)

errorImpl

protected abstract void errorImpl(String msg)

error

public static void error(String msg)

fatalErrorImpl

protected abstract void fatalErrorImpl(String msg)

fatalError

public static void fatalError(String msg)

fatalErrorImpl

protected abstract void fatalErrorImpl(String msg,
                                       Exception ex)

fatalError

public static void fatalError(String msg,
                              Exception ex)

toString

public String toString()

displays logger's level

Overrides:

toString in class Object

Returns:

-

See Also:

Object.toString()

levelInformation

public static String levelInformation(String prefixTabs)

Returns informations about logging levels

Parameters:

prefixTabs - optional tabs that will be written before displaying a line for indentation

Returns:

a string containing a list of levels with their description